Jig.



J. B. MORRGW.

JIG.

APPLICATION fILED JAN. l2 1918.

Patented Nov. 12, 1918.

2 SHEETS-SHEET l.

IMI

Jdwze j forTOw MMV@ J. E. MORROW.

APPLICATION HLED JAN. x2, |918.

Patented Nov. 12, 1918.

2 SHEETS-SNEEK 2.

UTED STATES PATENT FICE.

JAMES B. MORROW, OF DAWSON, NEW MEXICO, ASSIGNOR TO LINK-BELT COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

J IG.

Application filed January 12, 1918.

To all whom it may concern.'

Be it known that I, JAMES B. MoRRow, having declared his intention of becoming a citizen by taking out his first papers, residing at Dawson, in the county of Colfax and State of New Mexico, have invented a certain new and useful Improvement in Jigs, of which the following is a specication.

My invention relates to improvements injigs referring particularly to the means for getting rid of the over-sized refuse resultant upon the operation of -a coal washing jig. In general terms I provide a plurality of draw-olf members all of them discharging into a manifold which in turn discharges into the tailings pipe. In my preferred arrangement I provide these draw-off members spaced across the front of the jig. They are made up of a hulladjustable toward and from the floor of the jig so that the space between the floor and the hull through which the refuse may pass is adjustable. The refuse passes through such space carried by the water and then is discharged over an adjustable dam or gate. The height of the dam and the position of the hull may be independently adjusted to provide a more or less eircuitous path so that the material passes down under the edge of the hull and then over the dam.

Each one of these hulls projects up through the sheet of coal passing over the jig floor so that the opera-tor may see what is going on in the hull and sample the rejected refuse material at his leisure.

The device is arranged so that there is ample room for the coal to pass on both sides of the hulls and there is no appreciable or disadvantageous interference with the progress of the coal.

My invention is illustrated more or less diagrammatically in the `accompanying drawings wherein- Figure 1 is a plan view showing a part of the with my device installed;

Fig. 9. is a front elevation in part section along the line 2-2 of Fig. l;

Fig. 3 is a detailed section through the line 3-3 0f Fig. l; y

Fig. 4 is a detail plan of the parts shown in Fig. 3.

Like parts are indicated by like characters in all of the drawings.

A is the oor of the jig. It is ordinarily fixed and perforated so that water may pass Specification of Letters Patent.'

Patented N ov. 12, 1918.

seria11v0.211,5o7.

up through it being forced up from the settling chamber Al by means of the reciprocating plungers A2 which are driven by means not here shown in yunison so that as they workup and down the water pulsates 1n the settling chamber and rushes up through the perforations on the jig iioor lifting the coal. The oor is, of course, inclined and as the water goes back when the plungers come up the coal settles. It is agitated by this movement and the heavier, larger particles of refuse settle to the bottom of the perforated screen. The fine heavy particles pass down through the perforations. The washed coal remains at the top above the large heavy pieces. The whole mass of material gradually feeds along across the jig surface, the coal passes over the wall A3 and is discharged down a chute or other suitable path not here illustrated being left out for the sake of clearness.

The heavier refuse material which passes along the perforated floor immediately above it is never lifted by the water high enough so that it can get over the wall A3. Thus other means must be provided for getting it out of the jig. These means take the form of a plurality of draw-o members B arranged at spaced intervals along the front of the jig. The heavy material will gradually approach these plurality of draw-off members and be discharged through them since there will always be a certain movement more or less fan-shaped toward such discharge points along the bottom of the jig. Each draw-olf member is made up of a hull B1 slidable on a hull support B2. B3 is an adjusting arm rising upward from the hull adapted to be clamped in position against movement by means of a vclamp B1 with set screw B5. Operator raises or lowers this hull until the separating lip B6 is at the proper height above the screen A and then locks the parts in position by means of the bolt C and hand wheel C7.

C is a. draw-off port in the back wall of the manifold C1. This manifold is provided at its top with a plurality of openings C2 each one of them in register with one of the hull supports B2. The remainder of the manifold is closed at C3 so that the coal which passes over the wall A3 may not enter the manifold. The manifold discharges at its bottom in the tailing or soil pipe C4. C5

is an adjustable gate or dam perforated so that when in one position the port C is Wide open and adapted When raised by means of the adjusting arm B3 to gradually close the port. This gate or dam may then be adjusted from the bottom up to increase the height through Whch the discharge over-size fragments must be lifted as they leave the rThis controls the rate of .flow and thus the size of the particles or fragments which are allowed to escape.

It Ywill be noted that the loiver edge or separating lip of the hull is rearwardly inclined. rfhat is to say, the Wall of the hull is cut away so that the distance between the hull and the floor of the is greater' right at the discharge edge of the than it is farther haeltr` and that distance decreases from the front toward the rear. The result of this arrangrnent is to control the discharge of the refuse materiah ri`he smaller pieces can get through betiveeii the jig and the. hull at the rear. the iarger pieces will not get through but. will travei around toivard the side and get through there. lf von made the distance betvvecn the fioor and the hull the same all the Way around, and if you made it the same as the minimum distancet then the large pieces could not get through. lf you made it the same the maximum distance, the large pieces would get through but the small pieces would get tl'irough too easily and there ivould be `loo a cin-rent and too rapid a fioiv and much coal would be dravin out. By the arrangement shown. the small l)ieces get through first.v then the large pieces travel around and they get through, and thus everythingl gets through, but at the same time there is a sufficient obstruction, to prevent too great a flow of Water and too rapid a discharge of material such as might othervvise carry off with it too iarge a supply of coal which ought to go not through the refuse hull or hatch but over the dam and out across the top of the jig. Experience shoivs that While this inclination of the hull bottoni .vall and its approach toward the jig n'iight seein of questionable importance, nevertheless the device Will not vvorlr without it and do Work that Will be of any value. This arrangementseems to be the essence. T he other features are important but this inclined feature of the jig Wall must be present.

The inclination toward the front of the jig permits the opening between the jig plate and the bottom of the hull to be kept at such a distance that it- Will not discharge too rapidly thus loosening the bed oi refuse in the jig, but regulates the discharge and at. the same time provides an opening large enough to permit the larger pieces of refuse to pass through and be discharged from the without destroying the bed of the It not only 'provides the means for these large pieces to pass but maintains a total arca of' discharge small enough to maintain the entire bed, Which would rapidly disappear through an area large enough to permit the large pieces to discharge under the huil all the Way around. Obviously the essential thing is the relative inclination of the bottom of the hull B With respect to the jig plate or floor of the jig. lt makes no difference hoiv the iioor of the lies provided only that this inclination toward the front of the jig of the bottom of the hull be present. TWith this present, the desired result is obtained. Zhen it is not, the result is absent.

I claim:

1. The combination with a coal Washing jig of means for discharging refuse material therefrom comprising an aperture in the front Wall thereof, a hull extending into the jig from such front Wall and inclosing the aperture the lower edge of the hull upwardly inclined at a fixed angle from the rear to the Wall.

2. The combination with a coal `washing jig of means for discharging refuse material therefrom comprising an aperture in the front Wall thereof, a hull extending into the jig from such front Wall and inclosing the aperture the lower edge of the hull upwardly inclined at a fixed angle from the rear to the jig Wall, the hull being open at the top and extending upwardly through and projecting above the stream of coal as it passes across the jig Wall.

3. rllhe combination With a coal Washing of means for discharging refuse material therefrom comprising an aperture in the front Wall thereof, a hull extending into the jig from such front Wall and inclosing the aperture the lower edge of the hull upwardly inclined at a fixed angle from the rear to the jig Wall, means for changing the distance between the lower edge of the hull and the jig floor.

4. The combination with a coal washing jig of means for discharging refuse material therefrom comprising an aperture in the front Wall thereof, a hull extending into the jig from such front Wall and inclosing the aperture the lower edge of the hull upwardly inclined at a fixed angle from the rear to the Wall, the hull being open at the top and extending upwardly through and projecting above the stream of coal as it passes across the jig- Wall means for changing the distance between the lower edge of the hull and the jig Hoor.

5. The combination with a coal Washing jig of means for discharging refuse material therefrom comprising an aperturev in the front Wall thereof, a hull extending into the jig from such front Wall and inclosing the aperture the lower edge of the hull upwardly inclined at a fixed angle from the rear to the jig wall and means for changing` the area of the refuse discharge.

6. The combination with a coal washing jig of means for discharging refuse material therefrom comprising an aperture in the front wall thereof, a hull extending into thejig from such front wall and inclosing the aperture the lower edge of the hulll upwardly inclined at a fixed angle from the rear to the jig wall the hull being open at the top and extending upwardly through and projecting above the stream of coal as it passes across the jig wall and means for changing the area of the refuse discharge.

7 The combination with a coal Washing jig of means for discharging refuse material therefrom comprising an aperture in the front wall thereof, a hull extending into the jig from such front wall and inclosing the aperture the lower edge of the hull upwardly inclined at a fixed angle from the rear to the jig wall means for changing the distance between the lower edge of the hull and the jig floor and means for changing the area of the refuse discharge.

8. The combination with a coal washing jig of means for discharging refuse material therefrom comprising an aperture in the front wall thereof, a hull extending into the jig from such front wall and inclosing the aperture the lower edge of the hull upwardly inclined at a fixed angle from the rear to the jig wall the hull being open at the top and extending upwardly through and projecting above the stream of coal as it passes across the jig wall means for changing the distance between the lower edge of the hull and the jig floor and means for changing the area of the refuse discharge.

9. The combination of a coal washing jig of a hull and port through which the refuse is discharged, means for guiding and feeding refuse outwardly and downwardly through the hull and port, the lower boundary wall of the hull across which the refuse passes being downwardly and rearwardly inclined at a xed angle.

l0. The combination with a coal washing jig of means for discharging refuse material therefrom comprising an aperture in the front wall thereof, a hull extending into the jig from such front wall and inclosing the aperture the lower edge of' the hull upwardly inclined from the rear to the jig wall the hull adapted to be vertically adjusted without changing the inclination of its lower edge.

l1. The combination with a coal washing' jig of means for discharging refuse material therefrom comprising an aperture in the frontV wall thereof, a hull extending into the jig from such front wall and inclosing the aperture the distance between the lower edge of the hull and the floor of the jig decreasing from the jig wall rearwardly means for changing the distance between the lower edge of the hull and the jig floor without changing the inclination of the lower edge of the hull.

l2. The combination with a coal washing jig of means for discharging refuse material therefrom comprising an aperture in the front wall thereof, a hull extending into the jig from such front wall and inclosing the aperture the distance between the lower edge of the hull and the Hoor of the jig decreasing from the jig wall rearwardly the hull being open at the top and extending upwardly through and projecting above the stream of coal as it passes across the jig wall means for changing the distance between the lower edge of the hull and the jig floor without changing the inclination of the lower edge of the hull.

In testimony whereof, I affix my signature in the presence of two witnesses this 24th day of December, 1917.

JAMES B. MORROW.

Witnesses:

F. J. MULLEN, J. A. HURs'r.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

